NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 801-892 | 1XXX which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MURRAY | UT |
| — | 801-894 | 3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SPANIHFORK | UT |
| — | 801-917 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | OGDEN | UT |
| — | 801-922 | 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PLEASATGRV | UT |
| — | 801-925 | 0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PAYSON | UT |
| — | 801-926 | 4XXX5XXX7XXX8XXX9XXX which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CLEARFIELD | UT |
| — | 801-927 | 0XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | KAYSVILLE | UT |
| — | 801-932 | not yet reported which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PROVO | UT |
| — | 801-934 | 0XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FARMINGTON | UT |
| — | 801-937 | 1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MIDVALE | UT |
| — | 801-938 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MIDVALE | UT |
| — | 801-939 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FARMINGTON | UT |
| — | 801-951 | 0XXX6XXX8XXX9XXX · 2 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOUNTIFUL | UT |
| — | 801-983 | not yet reported which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SALT LAKE | UT |
| — | 801-984 | not yet reported which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MIDVALE | UT |
| — | 801-987 | 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MIDVALE | UT |
| — | 801-988 | 0XXX4XXX5XXX9XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MIDVALE | UT |
| — | 801-993 | 0XXX which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MIDVALE | UT |
| — | 801-994 | not yet reported which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SALT LAKE | UT |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.